A method, apparatus and computer program is described comprising: receiving a first transmission from an antenna, the first transmission comprising a first carrier including a first signal and a second carrier including a second signal, wherein the first and second carriers are separated in frequency within a first operational band; splitting the first transmission into a first channel and a second channel; downconverting the first channel to centre the first carrier at a baseband frequency to extract the first signal; downconverting the second channel to centre the second carrier at the baseband frequency to extract the second signal; and providing the first signal to a first processor and the second signal to a second processor; wherein the first and second processors are associated with first and second subscriber identity modules respectively.